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Which of the following air pollutant reduces the oxygen-carrying capacity of blood to a large extent?  A. carbon dioxide 

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Which of the following air pollutant reduces the oxygen-carrying capacity of blood to a large extent? 

A. carbon dioxide 

B. nitrogen monoxide 

C. carbon monoxide 

D. sulphur dioxide

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C. carbon monoxide 

The source of carbon monoxide in the air is by the incomplete burning of fuels such as petrol and diesel. Carbon monoxide is a very poisonous gas which reduces the oxygen carrying capacity of blood.

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